BLACK HILLS CORP

Ticker: BKH CUSIP: 092113109 Class: COM

FIRST INTERSTATE BANK's Holding History (CIK: 0001125727)

Note: Option positions (PUT/CALL) are excluded.

Q1 2019

Shares 3,627 Value ($000) $269 Avg Close $52.65 Range $46.35 - $57.40

Q4 2018

Shares 3,627 Value ($000) $228 Avg Close $47.68 Range $43.15 - $52.00

Q3 2018

Shares 3,627 Value ($000) $211 Avg Close $45.23 Range $42.66 - $48.12

Q2 2018

Shares 3,627 Value ($000) $222 Avg Close $42.43 Range $39.15 - $46.25

Q1 2018

Shares 100 Value ($000) $5 Avg Close $39.62 Range $37.38 - $44.38

Q4 2017

Shares 100 Value ($000) $6 Avg Close $45.46 Range $41.87 - $51.03

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2019	3,627	$269	$52.65	$46.35 - $57.40
Q4 2018	3,627	$228	$47.68	$43.15 - $52.00
Q3 2018	3,627	$211	$45.23	$42.66 - $48.12
Q2 2018	3,627	$222	$42.43	$39.15 - $46.25
Q1 2018	100	$5	$39.62	$37.38 - $44.38
Q4 2017	100	$6	$45.46	$41.87 - $51.03